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Finding the Fourth Proportional to 438,856.52, 605,622.42 and 247,870.28

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Solution

The fourth proportional to 438,856.52, 605,622.42 and 247,870.28 is: 342,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,856.52 : 605,622.42 = 247,870.28 : x
  2. Step 2: Convert to fraction form
    438,856.52/605,622.42 = 247,870.28/x
  3. Step 3: Cross multiply
    438,856.52x = 605,622.42 × 247,870.28
  4. Step 4: Simplify right side
    438,856.52x = 150,115,798,819.68
  5. Step 5: Solve for x
    x = 150,115,798,819.68/438,856.52
  6. Step 6: Final answer
    x = 342,061.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.